Commit 04bf3011 authored by Mark Brown's avatar Mark Brown Committed by Greg Kroah-Hartman

regulator: Support driver probe deferral

If we fail to locate a requested regulator return -EPROBE_DEFER. If drivers
pass this error code through to their caller (which they really should)
then this will ensure that the probe is retried later when further devices
become available.  In the unusual case where a driver doesn't want this
it can override the default behaviour.
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: default avatarGrant Likely <grant.likely@secretlab.ca>
Acked-by: default avatarLiam Girdwood <lrg@ti.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 263a5c8e
...@@ -1210,7 +1210,7 @@ static struct regulator *_regulator_get(struct device *dev, const char *id, ...@@ -1210,7 +1210,7 @@ static struct regulator *_regulator_get(struct device *dev, const char *id,
{ {
struct regulator_dev *rdev; struct regulator_dev *rdev;
struct regulator_map *map; struct regulator_map *map;
struct regulator *regulator = ERR_PTR(-ENODEV); struct regulator *regulator = ERR_PTR(-EPROBE_DEFER);
const char *devname = NULL; const char *devname = NULL;
int ret; int ret;
...@@ -2834,7 +2834,7 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc, ...@@ -2834,7 +2834,7 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
if (!r) { if (!r) {
dev_err(dev, "Failed to find supply %s\n", supply); dev_err(dev, "Failed to find supply %s\n", supply);
ret = -ENODEV; ret = -EPROBE_DEFER;
goto scrub; goto scrub;
} }
......
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